The DURAFORCE R230 Automatic Voltage Regulator for Leroy-Somer Generator is a Shunt type excitation automatic voltage regulator used on brushless alternators. Works at 50/60HZ. AVR sensing input is 90-140 VAC and produces 8 amp continuous and 10A max for 10 seconds. Interchangeable with part number EA230, AEM110RE014, 922-197.